/Engine/Source/Runtime/GeometryCore/Public/Curve/GeneralPolygon2.h
Remove any Hole polygons for which RemoveHolePredicateFunc(Hole) returns true
void FilterHoles ( [TFunctionRef](API\Runtime\Core\GenericPlatform\TFunctionRef)< bool(const [TPolygon2](API\Runtime\GeometryCore\TPolygon2)< T > &)> RemoveHolePredicateFunc )